Because I couldn't unplug the toilet with a plunger, I had to dismantle the entire fixture, no small feat for a nonplumber.  

Jammed inside the drain was a purple rubber dinosaur, which belonged to my five-year-old son.  

I painstakingly got all the toilet parts together again, the tank filled, and I flushed it. However, it didn't work much better than before!  As I pondered what to do next, my son walked into the bathroom.  

I pointed to the purple dinosaur I had just dislodged and told him that the toilet still wasn't working.  

"Did you get the green one, too?" he asked.